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Method for preparing high-performance graphite from graphene oxide modified coal pitch
The invention relates to a method for preparing high-performance graphite from graphene oxide modified coal pitch, belongs to the technical field of graphite preparation, and solves the technical problems of difficult dispersion and low efficiency of graphene oxide in the coal pitch modification process and the technical problem of non-uniform density of a carbon product caused by multiple times of impregnation. According to the solution, the preparation method comprises the following steps: by taking coal pitch as a raw material, graphene oxide as a modifier and organic solvents such as alcohol as a ball-milling medium, ultrasonically dispersing the graphene oxide in the alcohol, and conducting mixing and ball-milling to remove the medium solvent to prepare graphene oxide modified coal pitch; conducting preliminary heat treatment, so as to using the obtained modified coal pitch to prepare low-temperature treated coke; and crushing the low-temperature treated coke to prepare pressed powder, and conducting processes of forming, carbonizing, graphitizing and the like to finally prepare a high-performance graphite product. The raw materials are wide in source, the process is simple, and the special graphite which is low in porosity, high in density, high in mechanical strength and high in graphitization degree can be conveniently prepared.
本发明涉及一种氧化石墨烯改性煤沥青制备高性能石墨的方法，属于石墨制备技术领域，解决氧化石墨烯在改性煤沥青过程中分散困难、效率低的技术问题，同时解决炭制品经多次浸渍引起的密度不均匀的技术问题，解决方案为：以煤沥青为原料，氧化石墨烯为改性剂，酒精等有机溶剂为球磨介质，先将氧化石墨烯在酒精中超声分散后，再经过混合球磨脱除介质溶剂后，制备成氧化石墨烯改性煤沥青；通过初步热处理，将所得改性煤沥青制备成低温处理焦；将上述低温处理焦破碎后制备成压粉，经成型、炭化、石墨化等工艺，最终制备成高性能石墨制品。本发明原料来源广泛，工艺简单，便于制备孔隙率低、密度高、机械强度高和石墨化度高的特种石墨。
Method for preparing high-performance graphite from graphene oxide modified coal pitch
The invention relates to a method for preparing high-performance graphite from graphene oxide modified coal pitch, belongs to the technical field of graphite preparation, and solves the technical problems of difficult dispersion and low efficiency of graphene oxide in the coal pitch modification process and the technical problem of non-uniform density of a carbon product caused by multiple times of impregnation. According to the solution, the preparation method comprises the following steps: by taking coal pitch as a raw material, graphene oxide as a modifier and organic solvents such as alcohol as a ball-milling medium, ultrasonically dispersing the graphene oxide in the alcohol, and conducting mixing and ball-milling to remove the medium solvent to prepare graphene oxide modified coal pitch; conducting preliminary heat treatment, so as to using the obtained modified coal pitch to prepare low-temperature treated coke; and crushing the low-temperature treated coke to prepare pressed powder, and conducting processes of forming, carbonizing, graphitizing and the like to finally prepare a high-performance graphite product. The raw materials are wide in source, the process is simple, and the special graphite which is low in porosity, high in density, high in mechanical strength and high in graphitization degree can be conveniently prepared.
本发明涉及一种氧化石墨烯改性煤沥青制备高性能石墨的方法，属于石墨制备技术领域，解决氧化石墨烯在改性煤沥青过程中分散困难、效率低的技术问题，同时解决炭制品经多次浸渍引起的密度不均匀的技术问题，解决方案为：以煤沥青为原料，氧化石墨烯为改性剂，酒精等有机溶剂为球磨介质，先将氧化石墨烯在酒精中超声分散后，再经过混合球磨脱除介质溶剂后，制备成氧化石墨烯改性煤沥青；通过初步热处理，将所得改性煤沥青制备成低温处理焦；将上述低温处理焦破碎后制备成压粉，经成型、炭化、石墨化等工艺，最终制备成高性能石墨制品。本发明原料来源广泛，工艺简单，便于制备孔隙率低、密度高、机械强度高和石墨化度高的特种石墨。
Method for preparing high-performance graphite from graphene oxide modified coal pitch
一种氧化石墨烯改性煤沥青制备高性能石墨的方法
LIU ZHANJUN (author) / LIU BEN (author) / ZHAO HONGCHAO (author) / ZHANG DONGQING (author) / YAN XI (author) / LIAN PENGFEI (author) / ZHANG JUNPENG (author)
2021-03-02
Patent
Electronic Resource
Chinese
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